Biochem Module 4 Exam
1. Which of the following monosaccharides is not an
aldose?
a. erythrose
b. dihydroxyacetone
c. glucose
d. glyceraldehyde
e. ribose: b. dihydroxyacetone
2. when two monosaccharides are epimers:
a. they differ only in the configuration about the
penultimate carbon
b. one is an aldose, the other a ketose
c. they differ only in the configuration about one carbon
atom
d. they form o-glycosidic bonds
e. they are oligosaccharides: c. they differ only in the
configuration about one
carbon atom
3. Which pair is anomeric?
a. D-glucose and D-fructose
b. D-glucose and L-fructose
,c. D-glucose and L-glucose
d. alpha-D-glucose and beta-D-fructose
e. alpha-D-glucose and beta-D-glucose: e. alpha-D-glucose
and beta-D-glucose
4. lactose is made from linking galactose and glucose.
when this happens:
a. a polysaccharide is formed
b. gas is eliminated
c. an epimer is formed
d. an anomeric carbon is formed on carbon-1
e. lactose forms by a condensation reaction: e. lactose
forms by a condensation
reaction
5. lactose is made from linking galactose and glucose.
when this happens:
a. gas is eliminated
b. an anomeric carbon is formed on carbon-1
c. water is released
d. an epimer is formed
e. an aldose is formed: c. water is released
6. chitin and cellulose are both polymers of:
a. alpha-D-glucose
,b. galactose
c. beta-D-glucose
d. idose
e. maltose: c. beta-D-glucose
*starch, glycogen, amylose, and amylopectin = alpha-D-glucose
7. amylose and amylopectin are both polymers of:
a. alpha-D-glucose
b. beta-D-glucose
c. galactose
d. idose
e. maltose: a. alpha-D-glucose
*cellulose and chitin = beta-D-glucose
*starch, glycogen, amylose, and amylopectin = alpha-D-glucose
8. Which statement about starch and glycogen is false?
a. amylose is unbranched; amylopectin and glycogen
contain many branches
b. both are heteropolymers of glucose
c. both have many -OH groups in their structures
d. both starch and glycogen are energy storage
polysaccharides
e. glycogen is more extensively branched than starch: b.
both are heteropolymers
, of glucose
9. Which statement about starch and glycogen is false?
a. both have beta-D-glucose monomers
b. both starch and glycogen are energy storage
polysaccharides
c. both are homopolymers of glucose
d. glycogen is more extensively branched that starch
e. both have O-glycosidic linkages: a. both have beta-D-
glucose monomers
*starch and glycogen have alpha-D-glucose monomers
10. Which monosaccharide is not a 6-carbon
monosaccharide?
a. idose
b. glucose
c. galactose
d. dihydroxyacetone
e. allose: d. dihydroxyacetone
11. Which monosaccharide is not a 6-carbon
monosaccharide?
a. fructose
b. ribose
1. Which of the following monosaccharides is not an
aldose?
a. erythrose
b. dihydroxyacetone
c. glucose
d. glyceraldehyde
e. ribose: b. dihydroxyacetone
2. when two monosaccharides are epimers:
a. they differ only in the configuration about the
penultimate carbon
b. one is an aldose, the other a ketose
c. they differ only in the configuration about one carbon
atom
d. they form o-glycosidic bonds
e. they are oligosaccharides: c. they differ only in the
configuration about one
carbon atom
3. Which pair is anomeric?
a. D-glucose and D-fructose
b. D-glucose and L-fructose
,c. D-glucose and L-glucose
d. alpha-D-glucose and beta-D-fructose
e. alpha-D-glucose and beta-D-glucose: e. alpha-D-glucose
and beta-D-glucose
4. lactose is made from linking galactose and glucose.
when this happens:
a. a polysaccharide is formed
b. gas is eliminated
c. an epimer is formed
d. an anomeric carbon is formed on carbon-1
e. lactose forms by a condensation reaction: e. lactose
forms by a condensation
reaction
5. lactose is made from linking galactose and glucose.
when this happens:
a. gas is eliminated
b. an anomeric carbon is formed on carbon-1
c. water is released
d. an epimer is formed
e. an aldose is formed: c. water is released
6. chitin and cellulose are both polymers of:
a. alpha-D-glucose
,b. galactose
c. beta-D-glucose
d. idose
e. maltose: c. beta-D-glucose
*starch, glycogen, amylose, and amylopectin = alpha-D-glucose
7. amylose and amylopectin are both polymers of:
a. alpha-D-glucose
b. beta-D-glucose
c. galactose
d. idose
e. maltose: a. alpha-D-glucose
*cellulose and chitin = beta-D-glucose
*starch, glycogen, amylose, and amylopectin = alpha-D-glucose
8. Which statement about starch and glycogen is false?
a. amylose is unbranched; amylopectin and glycogen
contain many branches
b. both are heteropolymers of glucose
c. both have many -OH groups in their structures
d. both starch and glycogen are energy storage
polysaccharides
e. glycogen is more extensively branched than starch: b.
both are heteropolymers
, of glucose
9. Which statement about starch and glycogen is false?
a. both have beta-D-glucose monomers
b. both starch and glycogen are energy storage
polysaccharides
c. both are homopolymers of glucose
d. glycogen is more extensively branched that starch
e. both have O-glycosidic linkages: a. both have beta-D-
glucose monomers
*starch and glycogen have alpha-D-glucose monomers
10. Which monosaccharide is not a 6-carbon
monosaccharide?
a. idose
b. glucose
c. galactose
d. dihydroxyacetone
e. allose: d. dihydroxyacetone
11. Which monosaccharide is not a 6-carbon
monosaccharide?
a. fructose
b. ribose
